Coupling for driving bands or tapes



- W. DARGUE. COUPLING FOR DRIVING BANDS OIITAPES. APPLICATION men Ausm.1921.

1,413,972. Patented p -25; 1922.

I .1, F"-.-2,' Fzy a Ly a W res states "oourntine ron'nnivrne Berriesole Teens.

To all whom'it may concern; U

Be it known that I, WVALTER DARGUE, a subject of King George V of GreatBritain, residing at Halifax, in the county of York, England, haveinvented a new and useful Improvement in Couplings for Drivlng Bands orTapes, of which the following is a specification.

This invention has reference to devices for joining together or couplingthe ends of driving bands or tapes particularly the-flat woven bands ortapes used in textile machines.

My object is to improve upon the present coupling which will enable theends of a band or tape to be quickly and effectively oined.

My improved fastener, and the mode of applying same, as well as asuitable form of tool for use in applying the fastener, are illustratedin the accompanying drawing, in which Figs. 1' and 2 are, respectively,a side View and an end View of one of the improved fasteners; V

F'g. 3 shows the ends of a band or tape inserted into the fastener readyfor. the latter to be clinched, the tool for clinching or-applyingpressure to'the fastener being also shown in open position.

Fig. 4 shows the fastener clinched on to the ends of the band or tape;and

Fig. 5 shows the completed joint, on a somewhat larger scale than thepreceding figures. c

In constructin g a fastener according to my invention, I stamp orotherwise form, from metal strip of suitable gauge and width,

a rectangular plate a of the requiste dimensions and having on its twoopposing edges or sides a serles of sharp-pointed serrations or teeth a,a.

The plate is, by suitable means, curved or bent longitudinally as shownat Fig.2, in such a manner as to cause the teeth or serrations toincline or point inwardly towards one another, the depth or distancebetween the points of the teeth and the fiat'portion or crown of thefatsenerbeing regulated according to the thickness of the band or tapefor which the fastener is designed. The gap a between the points of theteeth is made or left sufliciently wide to admit of the introductionbetween them o-fthe doubled ends of the tape or band.

s ecification of L'ettersiatent. I Patntgfl Ap 25 '19 22, Applicationfiled August 31', '192 1L";sria1 ntleevgizs; i.

In applying the device,the' two. ends the band or tape byare doubledback upon. themselves for a shortdistance andplaced together with theend portions inwards. The four thicknesses are then introduced into thefastener, as shown at Fig. 3, with the doubled ends in contact with theinterior surface of the crown of same. 5

By means of a suitable tool, comprising in the instance shown twopivoted jawsc, c

having in theirinner faces suitably shaped recesses c, 0, pressure isthen applied to the two sides of-thefastener orcoupler in such a mannerthat the pointed teeth or serrations a are caused to be pressed inwardlyand upwardly. The points of the teeth enter the outer layers of thedoubled tape or band,

and, as'the pressure is continued, force the ends tightly up into thefastener or coupler, as shown at Fig. 4:. i

The. upper portions of'the jaws c, c are shoulderedas at 0 0 to form;abutments for the crown of the fastener while the pressure'is beingapplied .and prevent distortion of :the fastener, whilst thefinaldistance between the jaws, when fully closed, "corre sponds' to thedesired. width of the fastener when clinched or pressed. The lowerportion of each jaw'is relieved or set back and formed at an angle, asindicated at 0 to givethe requisite clearance to accommodate the doubledends of the band or tape when the aws are closed.

Any other suitable form of tool, by means of which the desired pressurecan be'obshown.

tained, may be employed instead of that The points of the teeth athaving been pressed inwardly and upwardly and the ends of the band ortape thus gripped; and .se-

cured as above setforth, a further locking.

or gripping action-may be obtained by flattening out the fastening orcoupler by pressure applied to'the crown, of same.

Any superfluous length of the doubled in ends of the band or tape-aretrimmed off on the face or ruiming side of the tape, as

indicated at Fig. 5 which shows -t he completed joint, before theflattening mentioned is done.

.The coupler or fastener is made slightly less in length thanthe. widthof the bandor of the band or tape. r

' No po-rtion'of thecoupler approaches the v working face of the band ortape, nor does the oint form any pro ect on or excrescen'ce towardstheworklng face, WlllCh 18 left perfectly flat and smooth.

Having thus described my invention, whet I claim as new and desire tosecure by Letters Patent is-:-

A belt fastener, comprising a plate pro- Y vided with arcuate endportions having serthe outer folds of the/belts and arrangedsubstentially in line with each other 7 In testimony whereof I afiix mysignature.

WALTER DARGUE.

